Automatic stopping device for talking-machines.



J. HINES.

AUTOMATIC STOPPING DEVICE FOR TALKING MACHINES.

- APPLICATION FILED AUG. 1, 1916 1,243,174.. Patented Oct. 16, 1917.

Ava/5570p.

" -.which Figure 1 is a plan, Fig. 2 a part ele JAMES I-IINES, OF GLASGOW, SCOTLAND.

AUTOMATIC STOPPING DEVICE FOR, TALKING-MACHINES.

Specification of Letters Patent.

Patented Oct. 16, 1917.

Application filed August 1, 1916. Serial No. 112,556.

To all whom it may concern:

Be it known that I, JAMns Times, a subj ect of the King of Great Britain, residing at Kelvinside, Glasgow, Scotland, have invented certain new and useful Improved Automatic Stopping Devices for Talking-Ma chines, of which the following is a specification.

The subject of this invention is an improved automatic stopping device for talking machines adapted to be set manually into position to permit rotation of the turntable when a record is to be reproduced and to be actuated automatically to arrest the rotation of the turntable when the reproduction is completed, say, when the stylus has entered the innermost convolution of the spiral groove in the record disk.

The improved device-comprises a brake which normally tends to move to the applied position in contact with the turntable but, which, so long as the record is being played, is held out of action by a restraining device held bya latch member mounted on an arm which can be moved, by hand over the record from a non-active position tangential to the machine turntable into the active position which is substantially radial of the turntable. When the arm is in the activeposition it is adjusted so that its end will be over the last convolution of the record groove or such other part of the groove as it is desired the playing should stop. As the stylus moves along the record groove, the tone arm moves with it until the point is reached where it is desired the playing should cease when the sound box or other part on or connected with the tone arm contacts with the latch member and causes it to free the restraining device which thereupon moves out of action and allows the brake to immediately act and stop the turntable.

After the brake has acted, by again turning the arm toward the tangential position, the restraining device can be again put into action so as, on again turning the arm to the radial position, to overcome the brake and hold it out of action, thereby enabling the machine to re-start.

The brake has, preferably, a toggle joint with spring actuation and the latch member has, as well as the restraining device, a spring action.

The invention is illustrated by way of example in the accompanying drawings in vation part vertical section showing the improved. starting and stopping device in operative relation to the turntable; Figs. 3, 4 and 5 show details.

Referring to the drawings The movable arm 1 has a tapered pivot pin 18 working, with friction tightness, in a socket 3 forming part of a plate 20 which is secured to the top of the box or case 19 of the machine at a place beyond but yet adjacent to the periphery of the turntable 1. The pivot pin is retained tightly in its socket by a spring 21. The arm, when inoperative, is disposed to one side of the turntable but when it is desired to bring it into the operative position it is turned, by hand, by means of the finger knob 2, to a position (see Fig. 1) which is approximately radial of the turntable and so that it overhangs the record disk 5, see Fig. 2. On the top of the arm is a latch member 6 which has an adjustable stop 22 at its one end and a jaw 23 at its other end and is pivoted on a pin 17 and is capable of being retracted, after movement, by a spring 15. 7 is one member of the brake and is pivoted at 7 a its one arm carrying a rubber or other suitable brake shoe 11 and its other arm, a cam piece 10 of undulatory form as shown at Figs. 1 and 4:. The member 7 is engaged by a fork at the one end of a pin 9 whose other end passes freely through a hole in a bracket 25, this pin 9 being not only retained in engagement with the member 7 by a spring 8 but also acted on by the spring in such manner as to normally urge the brake shoe 11 into operative posithan spring 8 which normally tends to force it outward as at Fig. 2 in which position it is retained by the jaw 23 of the latch member 6 engaging its reduced outer end 12 The spring 8 is strong enough to overcome the spring 14 whenever the pin 12 is released from the jaw 23 but so long as the pin is-retained by the jaw and the arm 1 is in the radial position the pin 12 acts 011 the toggle joint formed by member 7 and pin 9 and retains the brake out of action as at Fig. 1. When the arm 1 is in the inoperative position it is preferably arranged to lie substan tially tangential to the periphery of the table at with the pin 12 forced outward and held by the jaw 23, and, when the arm is to be put into the operative position, it is turned through an. arc of 9001 more, as de;

sired, and during this turning movement the pin 12 contacts With the cam piece 10 and forces it outWard, against'theactionof spring 8, so as to move the brake out of the operative p0siti0n.- Then the pointed end of the armhasbeen carefully. adjusted so as to 'be' over, say, the last convolution of the spiral groove of the record, the device: is setzs Immediately the record is finished the sound box 28 on the tone arm 27 strikesagainst-the the latch 6 is being :pushed- :aside; -i(against the action of=the: spring:;-l5) bythc sound box. 7

The record having been :played it: can :be:

removed-and axneW record inserted and,

thereafter, the arm 1 be turned .to or toward its tangential position-torfree thepin 12 from the cam10 andallow it to again-project under: the-"action of spring 14k Where-l upon the arm :is-again returned to the radial position for adjustment'to the-new record, the action of the trigger duringthis-returnmovementetaking. off the brake shoe and permitting the machine to restart;

It will be seen that asxthe free-end-of the latch member -occupies,-at the moment: the

latch member'is tripped, 'a position radj acent: to the'vcenter of the turntable and is acted' on" by the: sound iboX= or-a "tripping I memberthereon at a pointremote from the pivot of" thetone arm, the latch member constitutes a verysensitive interponentzof a stop'motlon mechanism.

W hilelI have described a preferred con struction capable- 0f" being conveniently fits ted. to existing .talkmg-jmachines, 1t W111i be evident; that the invention is not iimitedato the' particu-lar form described and that the details of construction may beavidely varied 1 withoutdeparture' fronrthe scope-:0? the in vention as defined: by the appended 'claimsr Having now fully described myinvention,

what I claim and desire to secure by Letters Patent i s:- I

1, An automatic stopping device for talking machines comprising, in combination; an

automatic spring actuated brake,- means for restraining the: action of the brake, a swing ing arm pivotally andrfrictionalljfi mounte ed by a pin and socket joint; meansnfor re-"=- taining the; pivot; in the-socket, a latch membBFIOIl the; arm adaptedito remove-the;:re.-; straint" from the brake' on being iStIllGk hy 1 the :sound 'boX :otthe; tone; armi of; the ma-:

chine; anda retractingispringifor the: latch i' memberq 2. An automatic?- stopping device-d ortalk-. in gznra'chin'esi comprisin g,-;;micomb1nat1on; an f automatic brake consisting of a pivoted member, a toggle pin embracing the end of saidmember and a spring tending to apply the brake, means for restraining the action of the brake, a movable arm, means on the arm adapted to remove the restraint from the brake and alloW it to act, and means for actuating. said last mentioned means.

3. An automatic stopping device for talking machines con1prising,1in combination, an automatic brake consisting of a pivoted member ivithcamupiece, a toggle pin embracing the endof said member and a spring tending ato apply the brake, means adapted to act on-:the :cam piece for rest-rainingthe' 30 action of the brale, a movablearm, means'on the arm adapted to remove the restraint: from the brakeandal lovv it toact, and means: for actuatingfsaid lastwmentioned':

means. 1 1.- An automatic stopping :device for talking machines of the disk-record type com prising, in combination, anautomatic brake, a pivotal arm capable ofbeingimoved over therecord, by hand, to thestopping position, a spring pin thereinzcapable of;holdingthe brake out of action, retaining means onthe arm for said; pin and meansrfor actuating said retaini-ngmeanssoasto free-the "pin: and permit the brake to act; 5.-An automatic stopping device :fo'rtalle ing :;n1achines- -comprising,. in combination, an automatic brake, a movable'varlmawhich is adjustable :byhand and has :a frictional: joint,.a spring pin therein capable of; hold-' mg the brake out otaction, alatch member" on the arm forretaining; said spring, pin, and means. for actuating said retaining; 7 means so as to, freethei pin and permit the bra-ke-pto actlu 6.- An automatic. stopping devicefor talking machineslcomprising, in combination, an

' automatic brake, aihand operated-'armipivoted on the-:machine -.case,wand frictionallyr: held Lin:adjustedposition, a spring pin in- 0 said arm and capable of holding the-brake. out of action,.meansron the armfor reta-in ing said pin in position: said; means being; capable of movement by a part: on 1 the tone arm of the machine to free-the said pin;

7 An automatic stopping .device ifortal-ln ing 1: machines -comprising,-; in (combination, an automatic brake, an arm, pivoted on the machine, case,-a ;spring;.pin in saidxzarm and 1 capable: of holding 2th? brake out of action,- 2 means on, the arm for retaining :s'aid 1 pinrinw position said ameans being-capable of actual tion by a part on the tone armwotvthe mam chinein one directionand by a I spring-in the other direction. 25

8. An automaticstoppingIdevice-fon-talking; machines comprising, in combination, arrau, tomaticibrake consi sting ofia pivotedmember, a toggle pinembracingthe end of said meme; herand a SPi'iHggtflldingfiQ apply the .bralgezk-g 3 o eeann a movable arm, a spring pin therein capable of holding the brake out of action, retaining means on the arm for said pin and means for actuating said retaining means so as to free the pin and permit the brake to act.

9. An automatic stopping device for talking machines comprising, in combination, an automatic brake, a movable arm, a spring pin therein capable of holding the brake out of action, a pivoted and spring retracted latch member on the arm for retaining said spring pin and means for actuating said retaining means so as to free the pin and permit the brake to act.

10. An automatic stopping device for talking machines comprising, in combination, an automatic brake, a movable arm, a spring pin therein capable of holding the brake out of action, a pivoted and spring retracted latch member on the arm having a jaw at its end for engaging and retaining said spring pin and means for actuating said retaining means so as to free the pin and permit the brake to act.

11. An automatic stopping device for talking machines of the disk-record type, comprising, in combination, an automatic spring actuated brake, means for restraining the action of the brake, an arm which :an be moved by hand over the record to a stopping position, a socket on the machine case, a pivot on said arm which frictionally engages in said socket, means for retaining the pivot in the socket, means on the arm adapted to remove the restraint from the brake and allow it to act and means for actuating said last mentioned means.

12. An automatic stopping device for talking machines of the disk-record type, comprising, in combination, an automatic spring actuated brake, means for restraining the action of the brake, an arm which is movable by hand, over the record and has a pivot pin at its one end, a socket on the machine case in which said pivot pin works, a spring tending to hold the pivot pin in the socket, a latch member on the arm adapted to remove the restraint from the brake and allow it to act, a spring acting on said latch member to retract the same after movement and means for actuating the said latch memher.

In testimony whereof I aliix my signature in presence of two Witnesses.

JAMES HINES.

WVitnesses:

H. D. FITZPATRIcK, WILLIAM GALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

